PerPetuall:Smartphone PerPetuall is a smartphone application that allows you to keep your phone book contacts permanently updated, providing both Android and iOS versions, solving the problem of those who have not notified their friends in time because they have changed their phone numbers.

Did you know? Did you know that 30% of your contacts in your cell phone change their contact information every year, such as cell phone number, email address, address, etc. The PerPetuall application is based on a crowd-sourcing mechanism, and the power of the crowd is great, but some of your contacts have changed their contact information, and one person in your circle will automatically spread it to other friends after they know your latest contact information. PerPetuall will then automatically update their latest contact information.